which of the following are electrical hazards osha quizlet
0000002733 00000 n The small electrical current enters his body through his left leg. To be safe, you must think about your job and plan for hazards. 0000108653 00000 n [Flexible Cords] Cords that are not 3-wire type, not designed for hard-usage, or that have been modified, increase your risk of contacting electrical current. -Severe skin burns. h|UnH}+i-. endobj 0000002385 00000 n stream He may have dropped the extension cord at the site and not heard the connector break. Is split Explosion Handling Damaged Extension Cord When Energized: A 19-year-old construction laborer was working with his foreman and another laborer to construct a waterfront bulkhead for a lakeside residence. 2.Is working properly x_HSqnwmky54YLzeStJi# TZObFT*.#BQF/Q endobj A doubly ionized lithium atom (Li2+,Z=3)\left(\mathrm{Li}^{2+}, \mathrm{Z}=3\right)(Li2+,Z=3) is in n=4n=4n=4 Bohr orbit. Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. 3.Loss of eyesight 1452 25 c.falls. 2.Complete Question 2: Which of the following is NOT a category of electrical burns? a.Ground Fault Circuit Insulator 4.Circuit breakers, When inspecting power tools, look for: The \rule{1cm}{1pt} artery carries deoxygenated blood from the heart to the lungs. Most of the hydrides of Group 1A and Group 2A metals are ionic. 0000002403 00000 n Which of the following are caused by contact with electricity? -Falls. 0000013999 00000 n D 600v. Contact utilities for buried power line locations. Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [, Frames and tracks of electrically operated. A worker was removing a metal antenna when it made electrical contact with a 7200-volt power transmission line. Extension cords are used to: He plans to use it over a period of at least six months. :$#k9BPnZ{Qqe/reKy,'ZlB# b+t6W' te+.W_{8u7Dt@1c. 0000005050 00000 n When you plug in a device (e.g., a power tool), the electricity takes the easiest path from the plug-in, to the tool, and back to the power source. Both the operator and the victim failed to notice that the boom had contacted a 2,400-volt overhead power line. H\n@0vj@/R#tnvihavopnS1>v8Z6zLpOCRU.O^6pImjgk{xv6%zp\,{|7_WqNfhu09$U?kW}: }y}]OIL5~W*8D~%W-yww;sORYbfspA.%YJV L%=Kx&0W+ D. Have an ANSI sticker and an expiration date. Question 1: Each year, approximately __________ workers suffer from electricity related injuries. 0000000816 00000 n As he removed the forms, he wrapped them with a length of cable called a choker, which was to be attached to a crane. Electricity must follow an uninterrupted loop from the power source to the equipment and back to the power source or ________. d.A power tool, A GFCI is designed to: b.Metal 5>vB35Plm$\4{U[lU`t~.vJGmFO^@+ cGPzNY*oS(m%q{Agp 0000005632 00000 n Computers Question 1: Employers must ensure that every electric utilization system and all utilization equipment installed, majorly modified, or replaced after March 15, 1972, complies with the standards for electricity set by the National Fire Protection Association, which have been adopted by OSHA. x=k6S *ywvkDyb_w rg&@Q5/^4O_~w/]7[xqs7Zt?LK-,>W\W`Mb?n8\.vpOJA7~5R%.oJd|Bbv7biQH%^~C=m3_ov{8] }C.Se={o7H[w@/^j BgXRC/O/eiLHiN\4~7x=^J@|]zu"x]lQ-+.xF=oY +B?jSl|(agF_].+UH\!/;AU .cG!h@42 iqnkZtdc#^)AX96(wFZ,RP{[\j\aJgc) diV;BNzZge(}=0Pj Qp@"]yOnNw89 One hand drill was not grounded, and the other had no safety plate. <> Which of the following can be the result of electric shock? Use the terms (freezing, gas, liquid, physical changes, solubility, solution, temperature, volume) to complete the sentence. Select the correct answer and then click DONE. xb```VVF A10p,``Pp`hhdpn``r`L:[ I,aZ4Knj21 `ny; Ge7t@OrMx)"cx&e:[~J%aUJ\*t Test your knowledge with our electrical safety quiz below. )KL3C?e%Y92$,]^)kmR/!8\ JF N'bT\U1+tc+&:'ZuGi!UeUrE [?CrU.&|#@Ed,=2UF]r/n/{v-;v>%/~;[*AxBU,-#!uyFGR,Wv[ cOzObnZfI4ob:pf "~ .iBE@mOs:Os5U9cnU` Vd"F'4Bm?>}hyRQyrX0U026h7#L'. 0000017336 00000 n Using equipment outdoors that is labeled for use only in dry, indoor locations. c) Establish and enact an assured equipment grounding conductor program (AEGCP) The accident site was wet; also, humidity was high and the victim was sweating. Follow manufacturers' recommended testing procedure to insure GFCI is working correctly. c.911 lb MKS If the power supply to the electrical equipment at your site is not grounded or the path has been broken, fault current may travel through a worker's body, causing electrical burns or death. d.The body of the power tool. -Glass. a.20,000 volts a. 0000110659 00000 n 0000068035 00000 n 0000057373 00000 n . You can classify scales for weighing objects as those that use springs and those that use standard masses to balance unknown masses. Extension cords may become a trip hazard when: 2.Flooding The victim used two extension cords to supply power: a home-made cord plugged into an ungrounded receptacle on the pole, and a UL-approved cord extending from the homemade cord to the saw. trailer <<11AC4BACEBCA4B32A885F1120BD3A307>]>> startxref 0 %%EOF 153 0 obj <>stream (See NFPA 70E-2021 Article 130 and OSHA subpart S part . d. Match the outlet prongs to the extension cord. Potential hazards of electricity are preventable if you do which of the following listed below? 1. Which of these can be used as insulating live-line tools for electrical protection. The ground wire was not attached on the male end of the cord's plug. 0000419562 00000 n 3. 2.Using an aluminum ladder when the possibility exists for contact with electricity. 0000002876 00000 n If electrical equipment is used in ways for which it is not designed, you can no longer depend on safety features built in by the manufacturer. What factors determine the severity of Dirk's injuries? Intentionally creating a low-resistance path that connects to the earth. Does the fall qualify as an electrical accident? 3 0 obj Metal partitions, grill work, and similar metal enclosures around equipment of over 1kV between conductors. Any cords found not to be marked for hard or extra-hard use, or which have been modified, must be taken out of service immediately. a.Two-prong plug %PDF-1.4 % Other protective measures include guarding or insulating the lines. a.311 (See NFPA 70E-2021 Article 130 and OSHA subpart S part 1910.333 (a) (1)- (2) and (c) for complete details.) The driver stopped the truck under the power line, and the victim, not realizing that the truck had moved, swung the boom to position the bucket behind the truck. Power was supplied through two extension cords from a nearby residence. Damaged Extension Cord Leaves Arc Welder Ungrounded: A 29-year-old welder attempted to connect a portable arc welder to an electrical outlet using an extension cord. Select the choices that accurately define the common electrical term. The floor is covered in water and she is barefoot. A) Identify; Castigate; C) Evaluate; D) Modify; 3. 2.Yes, because he is using a portable power tool. 0000007464 00000 n Find the energy required to raise an electron from the n=4n=4n=4 state to the n=5n=5n=5 state in Li2+\mathrm{Li}^{2+}Li2+ and in hydrogen atom. endobj 4.Good condition of moveable parts, Items that could encourage overheating and cause tools to malfunction or start a fire include: Is the west coast of Africa a plate boundary? startxref Quiz Question 7: Which is not an insulator? 0000001672 00000 n Exercise their rights under the law without retaliation, including reporting an injury or raising health and safety concerns with their employer or OSHA. What was Latoya's first mistake? uVNSF!UTRQ91uR,6@hCH}]GAlaPh)NeT$iQ89S9|?4wahU ltz9 PH[$I&VX9WG%K~1{u8M:D"+HLEy 3@NR^z!rB^?RyOj;'Lof. 2.Loss of muscle control Explain the process that prevents the poles from steadily cooling off and the tropics from heating up over time. Used across walkways. B 208v. Due to the dynamic, rugged nature of construction work, normal use of electrical equipment at your site causes wear and tear that results in insulation breaks, short-circuits, and exposed wires. 1. a.Electricity d) All of the above. -Conductor= permits the free flow of electricity. <>>> Question 3: Employers are not required to enforce lock out/tag out practices in the workplaces. 1.Clench 0000006866 00000 n 0000006893 00000 n Improper Use of Extension and Flexible Cords. This standard also includes safe work practices for employees performing other work activities that can expose them to electrical hazards as well as safe work practices for the following: (1) Installation of conductors and equipment that connect to the supply of electricity (2) Installations used by the electric utility, such as office . b) Staples 3.Vapor 1.The humidity of the environment c.Power lines b.burns. The scaffold had been constructed only 21 horizontal inches across from a 7,620-volt power line. SCENARIO: You encounter a co-worker on a residential remodeling job. =EAn`u!d, |\~Y>ZF( dnLN\2vP6 >sSjgh2:Lmqx#a[G2{h$zW]_:@Lvr)2T:R-/ `&~O4j)>1P*M 5>F:1B.g!AR 0000089142 00000 n Electricity to operate portable power tools was supplied by a temporary service pole 50 feet away. 0000001116 00000 n De-energizing %PDF-1.5 The pole had not been inspected by the city and was not in compliance with code requirements (it was not grounded). |tYny@YE>LkNj4-czZf"Usw>j\sv3fn},>},KeA s Frequently inspect electrical systems to insure that the path to ground is continuous. Short In Power Saw/Ungrounded Temporary Power Supply: On July 10, 1986, a 22-year-old carpenter was working at the construction site of large apartment complex, using a portable electric saw to construct the wooden framework of a laundry building. Match the length from job to outlet. B. (E) a, b, and c. 2. 0000008392 00000 n Electricity becomes hazardous when it takes an unintended path to complete the ________. 2 0 obj Select the correct answer and then click DONE. b.Shut off power within five minutes of the imbalance a.Standing in water The most dangerous place to use electrical equipment is? The victim collapsed into the lake and sank 4-1/2 feet to the bottom. You need to evaluate the situation you are in and assess your . Adapter For 3-Prong Cord Not Grounded To Outlet: On May 27, 1986, two workers were using a 110-volt auger to install tie-down rods for a manufactured home. B. outdoors. He yelled for his co-workers to disconnect the power, which they did. 4,600. Suppose a volcano threw so much ash into the air that it blocked much of the sunlight. Ground all power supply systems, electrical circuits, and electrical equipment. 0000001896 00000 n . Lx*jWP# /c2)|]NXqAx>=~'[ Lockout/tagout procedures. b.30,000 volts b. There are many types of hazards - chemical, ergonomic, physical, and psychosocial, to name a few - which can cause harm or adverse effects in the workplace. 0000013716 00000 n Many workers are unaware of the potential electrical hazards present in their work environment, which makes them more vulnerable to the danger of electrocution. 0000003715 00000 n Apply a warning tag to any defective tool and do not use it until the problem has been corrected. When inspecting extension cords, look for: c.Three-prong plug As he began to pull away, the crew supervisor yelled to him, asking if the crew could use his water hose to wash out their cement bucket suspended from the crane. q>NmnLNmb$"Iyx1bD9.~Ll. Quiz Question 2: Which is acceptable when using powdered tools? s\A0W+GA?~G?nnnnnnnnnnnn>>{Wrbrbrbrb sbZef'N(:QvD":1vbo7o7o7W*_bTs6ivyU,;dFW` { endstream endobj 191 0 obj [/ICCBased 211 0 R] endobj 192 0 obj <> endobj 193 0 obj <> endobj 194 0 obj <> endobj 195 0 obj <> endobj 196 0 obj <>stream OSHA: Air Monitoring & Medical Surveillance, WebQuest: Biomes, Ecosystems and Habitats. b.Ground Fault Critical Interrupter d.Ground Fault Circuit Interrupter, : Another electrical hazard that can cause injury or death in the workplace is a ________ path to ground. What three things must be present for a current to flow through a conductor. b.Not wearing insulating shoes or boots when she was handling electrical equipment Overhead and buried power lines at your site are especially hazardous because they carry extremely high voltage. OSHA will keep all identities confidential. To verify an electrically safe work condition, all these conditions should be confirmed EXCEPT: Effective training of employees includes all of the following EXCEPT: How to operate power tools in wet conditions. Engineers, electricians, and other professionals work with electricity directly, including working on overhead lines, cable harnesses, and circuit assemblies. The following hazards are the most frequent causes of electrical injuries Contact with Power Lines, Lack of Ground-fault Protection, Path to Ground Missing or Discontinuous, Equipment Not Used in Manner Prescribed, and Improper Use of Extension and Flexible Cords. She has an older drill with a steel housing and a 3-prong plug. While attempting to unplug the compressor from the extension cord, the employee was fatally shocked. 1.Fingernails How fast would the ball be moving at the moment of release? Two of the extension cords had no ground prongs, and some of them were repaired with electrical tape. Quiz Question 6: Which of these is not a type of Ground Fault Circuit Adapter? 0000021516 00000 n Only after a rescue squad arrived about 4 minutes later did anyone realize that the crane was in contact with a power line -- all those present had assumed that the victim had suffered a heart attack. 0000004686 00000 n Which of the following are insulators of electricity? Explain the purpose and use of the MyPlate symbol. When used on the moon? d.Alert workers of any water in the area, GFCI is an acronym for: gYpV:+ Use only extension cords that are 3-wire type. c.The outlet. Select the correct answer and then click DONE. 12 months C. 6 months D. Never Q23. 0000004444 00000 n Remove cords from receptacles by pulling on the plugs, not the cords. An examination revealed that the spring, cover plate, and part of the melamine casing were missing from the face of the female connector (the spring and some melamine fragments were found at the accident site). Outlets Electrical Safety Multiple Choice Questions and Answers for competitive exams. hazard or that their employer is not following OSHA's rules. 0000004273 00000 n 2. <>>> b.Rod 0000028595 00000 n 1.Pain Use only extension cords that are marked with a designation code for hard or extra-hard usage. The power switch on the welder was already in the "on" position, and the female end of the extension cord, which was spring loaded, had apparently been dropped and broken. Continually audit cords on-site. Should Ajay use a GFCI? 0000001604 00000 n (C) Hot sticks. xref What is the most common, non-fatal, electrical shock-related injury? 4.Damaged cover or insulation, When using electric-powered hand tools, do not overload: A worker was operating a " electric chisel when an electrical fault occurred in the casing of the tool, causing him to be fatally electrocuted. 4.Dirt build-up, Use only approved and authorized power tools in areas where the following hazards may be present: c. Extend the reach of the power tool. Supply power for tools or equipment on a long-term basis. An employee was texturing a wall using an air compressor. Electrical hazards like frayed cords, missing ground pins, improper wiring or the harm that these hazards pose. OSHA 10-Hour Safety Course - Electrical Safety Page 5 of 5 Use the three-stage safety model to stay safe: recognize, evaluate, and control hazards. View Answer Answer: 600v 4 . Whether the hazard is posed by worn or damaged power tools or cords, improperly grounded tools or equipment, or the presence of standing water, it is the responsibility of the contractor to make sure the tools and equipment To avoid injury or death, you must understand and recognize hazards. OSHA 29 CFR 1910, Subpart P . d.Constructive objects, Select all answers that apply to the following statement and then click DONE. The NEC C. Suggestions 4.The amount of current, An electrical burn may affect: OSHA requires the testing of a volt meter after a voltage test on voltage above_____. Select the correct answer and then click DONE. RZyd An OSHA inspection revealed that the tool's original power cord had been replaced with a flat cord, which was not designated for hard service, and that strain relief was not provided at the point where the cord entered the tool. Quiz Question 10: Ground-fault circuit interrupters must be used for all of the following except? Hazards are created when cords, cord connectors, receptacles, and cord- and plug connected equipment are improperly used and maintained. c.Gasoline Select the correct answer and then click DONE. Draw a line from the item on the left that corresponds to the match on the right. This is action is also known as creating or completing an electrical circuit. When it completes a circuit through the body. She finds several available in the shop. Select the correct answer and then click DONE. <> [. a. 1 0 obj Dust Electrical Safety Quiz Electrical safety is an important topic that you and your workers need to know about. 0000420277 00000 n 4. 3.Needs to be reset Ground metal parts of the following non-electrical equipment, as specified by the OSHA standard [29 CFR 1926.404(f)(7)(v)]: Frames and tracks of electrically operated cranes. d.Add more outlets. Using multi-receptacle boxes designed to be. xYmo -ER/&@[D,_! b. 2.Using extension cords or electrical tools properly. True. c.Absorb any water around the area Easy to identify 1.Is faulty The workers administered CPR to the victim, but to no avail. endobj 0000421627 00000 n Muscular contraction and nerve damage occur; death likely. Regarding hand protection employers should: A. As he is working on the wiring, he receives an electrical shock that knocks him backward and causes him to fall off the ladder. 0000006152 00000 n 0000003254 00000 n 3.No, because he will not be touching any grounded material when using the tool. Use only equipment that is approved to meet OSHA standards. a.Supply power for tools or equipment on a temporary or short-term basis. Ground all exposed metal parts of equipment. If the insulation on the tool's power cord is damaged and you touch this area while grounded, the electricity will ________. Some of the causes of these are live wire s that may be lying around, overloaded circuits, explosions that are caused by flammable objects, etc. . 4 0 obj 4 0 obj Question 4: Which of the following is a type of burn caused by electrical hazards? he most common shock-related injuries are: 4.No, because he does not need to use an extension cord. 2. Does the fall qualify as an electrical accident? OSHA 29 CFR 1910, Subpart S . -If current passes through the body near the heart or brain. (b) The same reaction can also be classified as a redox reaction. Bob is asked to repair some overhead wiring, requiring the use a ladder. The modification of the plug was not an intended use or prescribed by the manufacturer. I;C`_;LV'd,|#H--e`( ')'RpAgA7O`?%68SB 0000007694 00000 n d.50,000 volts. As she is adding in the chemicals, her hand touches the motor and it becomes energized. trailer No GFCI's were used. gYpV:+ Which of the following injuries can occur when muscles flex or twitch from an electrical shock? Using circuit breakers or fuses with the wrong rating for over-current protection, e.g. Quiz Question 1: Which of the following is not a category of electrical burns? Frames of non-electrically driven elevator cars to which electric conductors are attached. The normal wear and tear on extension and flexible cords at your site can loosen or expose wires, creating hazardous conditions. Attaching ungrounded, two-prong adapter plugs to three-prong cords and tools. a.A small current Question 1: Which of the following is a danger of electricity? % trailer <]/Prev 500768/XRefStm 1495>> startxref 0 %%EOF 222 0 obj <>stream Besides personal bodily injury, what other electrical hazards can be found in the workplace? Do not remove ground prongs from cord- and plug-connected equipment or extension cords. The following hazards are the most frequent causes of electrical injuries Contact with power lines, Lack of ground-fault protection, Path to ground missing or discontinuous, Equipment not used in manner prescribed, and Improper use of extension and flexible cords. If a worker has been retaliated against for using their rights, they Which of the following factors determine how severe an electrical injury might be? 3.Cramp When the energized conductor made contact with the ladder, the path to ground included the worker's body, resulting in death. Which group would be more accurate when used in an accelerating spaceship? Before work began, the company safety director made sure that insulated line hoses were placed over sections of the the power line near the jobsite and that a safety clearance zone was marked off for arriving cement trucks. 0000002150 00000 n 3.Maintaining a safe distance of at least 10 feet from all overhead power lines. 1476 0 obj <>stream Seven employees of a masonry company were erecting a brick wall from a tubular, welded-frame scaffold approximately 24 feet high. It is important to note that NFPA 70E is a . a.Conductive objects 1. Yes, because he will be using electricity near water. Death is probable. Electrocution. Is not painted over -Rubber. The source of the electricity was apparently a short in a receptacle, but examination revealed that the electrical equipment used by the contractor was in such poor condition that it was impossible to make a certain determination of the source of the short. One handle has a deadman's switch. 0000004208 00000 n 0000108920 00000 n Suppose you could convert the 525525525 Calories in the cheeseburger you ate for lunch into mechanical energy with 100%100 \%100% efficiency and you throw a 0.145kg0.145~\mathrm{kg}0.145kg baseball with the energy contained in the cheeseburger. 0000014257 00000 n The light fixture, which served as a ground, was known to be faulty for at least 5 months before the incident. Electricity will form a "path" or "loop". d. Power outlets, ________ are anything that can transmit electrical current. c.Guaranteed Fault Circuit Interrupter 0000018681 00000 n 3.Draped over equipment. When does electricity become hazardous to humans? Question 2: It's okay to use extension cords with worn insulation, as long as you are careful about it. 1.Extension cords Look for overhead power lines and buried power line indicators. 0000002557 00000 n d. Not checking to make sure that the motor was properly grounded, If the circuit does not turn off when testing the GFCI, the GFCI: 182 0 obj <> endobj xref 182 41 0000000016 00000 n A measure of the energy of motion of the particles in a substance is its _____. [, Do not modify cords or use them incorrectly. Select the correct answer and then click DONE. 0000010603 00000 n OSHA 10 General Industry Test Answer Key WALKING. d. 411, You are working with a 10-foot section of a conductive pipe near power lines. c) Age Burns. Fatal electrocution is the main risk, but burns and falls from elevations are also hazards. 1.Is firmly connected Visually inspect all electrical equipment before use. What is the primary purpose of properly grounding equipment? 4.Cardiac arrest Electrocution was the second leading cause of worker deaths on construction sites in the United States in 2011. A 20-year-old bricklayer standing on the work platform in contact with the main scaffold was electrocuted. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire. As a result, the ground prong of the welder plug did not insert into the ground terminal of the cord, so that as soon as a connection was made, the outside metal case of the welder became energized, electrocuting the victim.
Delta State Softball Coach,
Newcastle City Council Taxi Complaints,
Hotels Between Salt Lake City And Yellowstone,
Psat National Merit Cutoff Class Of 2022,
How To Write A Check With Attention To Someone,
Articles W